Fire-alarm



' I I C'fiarZesPeZerswq 13Q mmm C. PETERSON.

FIRE ALARM.

APPLICATION FILED DEC. 11. 1914.

1,322,336. Y Patented Nous, 1919.

C. PETERSON.

FIRE ALARM APPLICATION mau'ozc. n. 1914. 1,322,386. Patented Nov. 18, 1919.

v I Z SHEETSSHEET 2.

4Q J C) a for dwellings,

PATENT OFFICE 1 CHARLES PETERSON, or LEAL, NORTH DAKOTA.

To all whom it may concern Be. it known that I, CHARLES PETERSON, a citizen of the United States, residing at Leal, in the county of Barnes and State of North Dakota, have invented certain new and useful Improvements in Fire-Alarms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. b

My invention relates to improvements in fire alarms of the electrically operated type and resides in the provision of an alarm which comprises audible signaling means that is electrically operated and has its electrical circuit normally open and provided P with novel circuit closing means arranged to" close the circuit when l a given point.

fire breaks out at Another object is to provide a fire alarm such as stores, hotels, private dwellings and also ships which is arranged so that various parts of the dwelling or ship may be protected against fire so that should a fire break out the alarm will immediately operate thus preventing the fire gaining head-way. r 7

Another and more specific object is to pr0- vide a fire alarm which comprises an audible signal which may be arranged at any suitable point within a dwelling, for example, in a bed room, amelectrical circuit being provided for the audible signal and automatic circuit closing means associated with the circuit, the automatic circuit closing means consisting of spaced contact members, and a weight normally suspended above the spaced contact members by means of an inflammable cord or like element, which cord is arranged about the room of a dwelling in any suitable manner and preferably 'at pointswhere a fire is apt to start in order that the weight will be released, when the cord catches fire and parts, to effect a closing of the circuit for the signal. v

Another object of my invention is to provide simple and effective means of the above mentioned character that may be easily and cheaply'installed, is reliable and efficient in of means in front elevation,

' within one of the FIRE-ALARM. a

the following particularly pointed out in the claim.

I have illustrated the preferred embodiment of my invention as it is reduced to practice, and throughout theseveral views of which similar reference numerals designate corresponding parts,

Figure 1 is a sectional view taken through it would appear when in use and the" signaL ing means in side elevation,

Fig. 2 is a fragmentary front elevation a part of dwelling showing the signaling F 1g.-3 is an enlarged front elevation of the circuit closing means and battery 021s in and ig. 4 is a diagrammatic view of the signal.

Referring to the drawings by characters of reference A represents a section of a dwellmg or ship which comprises slde walls 1 and ceilings 2.

' In carrying out my invention, an audible signal 3, preferably an electric bell is placed rooms, preferably the bed room ofthe dwelling A and electrically connected by means of conductors 4 and 5 with a dry cell 6 or' other suitable source of current that is placed Within a rectangular casing 7, the casing 7 being provided with attaching ears 8 at itsends and being secured upon the wall of a room in another part of the dwelling, preferably in some part of the dwelling adjacent to which is stored combustible material. t

The casing 7 is divided into two compartments, B and C respectively by means of a longitudinal partition 9. The battery 6 is contained within the compartment B. Carried within the lower end of the compartment C are spring, normally spaced contact members 10 and 11, the one 11 being disposed above the one 10 and arranged to be forced into contact therewith. The conductor 4 is connected with the contact 11 and a conductor 12 leads from the contact 10 to the battery 6.

Carried within the compartment C is a a building showing my improved signal as Specificat on of Letters Patent. 7 P t t NOV. 18, 1919' pplication filed December 17,1914. Serial No. 877,739,

specification and then more weight, member 13 that is normally held in spaced and suspended relation to the concable 14: is directed u wardly wall of the compartment C and slidably receives the cord or cable 14. lhe casing is also provided with a narrow, oblong horizontally disposed bottom compartment or space 7 to receive the wires, which extend from the contacts into the battery receiving compartment.

' The casing 7 is preferably secured in a vertical position upon the side Wall of a room at a point below the ceiling 2, and the and engages and passes over a pul ey 17 that is carried by the ceiling 2. The cable is extended across the room at the ceiling 2 and passed over a pulley 18 similar to the one 17 at the opposite side of the room and allowed to hang from the pulley in alinemen-twith the opposite side wall. At the other end of the cable is carried a balance weight 19 which is heavier than the weight 13 and normally having a pair of vertical compartments and holds said weight 13 in suspended relation to the contacts 10 and 11. This cable 1 1 may be placed zig zag across the ceiling of the room or arranged in any other suitable manner, not shown, relative to the walls and ceiling of the room, in any way, which will allow for the supporting of the weight 13 in spaced relation to the normally spaced contacts 10 and 11.

In operation, should a fire break out within the room in which the cable 14 is arranged, the cable catches on tire and parts allowing the weight 13 to drop into engagement with the contact 11 and force said contact into engagement with the contact 10. The weight 13 is sufiiciently heavy to hold the contacts in contacting relation thus the circuit for the audible signal 3 is kept closed and the signal operated until the weight 13 is removed from engagement with the contacts. The cord or cable 14 is preferably waxed or oiled so that it will catch afire readily.

The casing 7 is provided with a hinged door 20 so that access to the mechanism therein may be had. The casing may be constructed of fire-proof material.

With reference to the foregoing description and accompanying drawings it will be observed that I have provided a fire alarm which will operate automatically to indicate the presence of fire in various parts of a dwelling or like structure and which will prove of great service to farmers in that it may be connected with the barn in such manner that the owner will be alarmed in case of fire in the barn.

In practice, I have found that the form of my invention, illustrated in the drawings and referred to in the above description, as the preferred embodiment, is the most efficient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the fact that various minor ch'angesin details of construction, proportion and arrangement of parts'may be resorted to, when required, without sacrificing any of the advantages of my invention, as claimed.

What is claimed is A fire alarm of the character set forth including a casing open at its front side and a horizontal compartment located immedi ately below the vertical compartments, a battery located within one of said vertical compartments, spaced resilient contacts located within the other vertical compartment and secured to the bottom wall thereof, a

wire connected to one pole of the battery and extending through the top wall of the v casing, a second wire connected to the other pole of the battery and to one of said contacts, said second wire being housed in the battery receiving compartment and in said horizontal compartment and extending through the bottom wall of each vertical compartment, a third wire passing through the top wall of the casing into the battery receiving compartment and through the bot tom wall of said compartment into the horizontal compartment and thence through the bottom wall of the other vertical compartment and attached to the other of said contacts, a weight suspended within said other vertical compartment above said contacts and having a width less than the width of the compartment, and a removable closure for the open side of the casing.

In testimony whereof I atfix my signature in presence of two witnesses.

CHARLES PETERSON.

Witnesses v WENDELL STREAM, J. O. JENSEN. 

